:root {
      --bg-primary: #0a0f1c;
      --bg-secondary: #111827;
      --fg-primary: #f8fafc;
      --fg-muted: #94a3b8;
      --accent: #ff6b35;
      --accent-glow: rgba(255, 107, 53, 0.4);
      --card-bg: rgba(17, 24, 39, 0.8);
      --border: rgba(148, 163, 184, 0.1);
      --gradient-1: #ff6b35;
      --gradient-2: #f7931e;
      --gradient-3: #22d3ee;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: 'DM Sans', sans-serif;
      background: var(--bg-primary);
      color: var(--fg-primary);
      overflow-x: hidden;
      line-height: 1.6;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
      font-family: 'Space Grotesk', sans-serif;
    }

    /* Background Elements */
    .bg-grid {
      position: fixed;
      inset: 0;
      background-image:
        linear-gradient(rgba(148, 163, 184, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.03) 1px, transparent 1px);
      background-size: 60px 60px;
      pointer-events: none;
      z-index: 0;
    }

    .bg-gradient-orb {
      position: fixed;
      border-radius: 50%;
      filter: blur(100px);
      pointer-events: none;
      z-index: 0;
    }

    .orb-1 {
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(255, 107, 53, 0.15) 0%, transparent 70%);
      top: -200px;
      right: -200px;
      animation: floatOrb 20s ease-in-out infinite;
    }

    .orb-2 {
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(34, 211, 238, 0.1) 0%, transparent 70%);
      bottom: 20%;
      left: -150px;
      animation: floatOrb 25s ease-in-out infinite reverse;
    }

    .orb-3 {
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(247, 147, 30, 0.1) 0%, transparent 70%);
      top: 50%;
      right: 10%;
      animation: floatOrb 18s ease-in-out infinite;
    }

    @keyframes floatOrb {

      0%,
      100% {
        transform: translate(0, 0) scale(1);
      }

      33% {
        transform: translate(30px, -30px) scale(1.05);
      }

      66% {
        transform: translate(-20px, 20px) scale(0.95);
      }
    }

    /* Scroll Reveal Animations */
    .reveal {
      opacity: 0;
      transform: translateY(40px);
      transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .reveal.active {
      opacity: 1;
      transform: translateY(0);
    }

    .reveal-left {
      opacity: 0;
      transform: translateX(-60px);
      transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .reveal-left.active {
      opacity: 1;
      transform: translateX(0);
    }

    .reveal-right {
      opacity: 0;
      transform: translateX(60px);
      transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .reveal-right.active {
      opacity: 1;
      transform: translateX(0);
    }

    .reveal-scale {
      opacity: 0;
      transform: scale(0.9);
      transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .reveal-scale.active {
      opacity: 1;
      transform: scale(1);
    }

    @media (prefers-reduced-motion: reduce) {

      .reveal,
      .reveal-left,
      .reveal-right,
      .reveal-scale {
        opacity: 1;
        transform: none;
        transition: none;
      }

      .orb-1,
      .orb-2,
      .orb-3 {
        animation: none;
      }
    }

    /* Stagger delays */
    .delay-1 {
      transition-delay: 0.1s;
    }

    .delay-2 {
      transition-delay: 0.2s;
    }

    .delay-3 {
      transition-delay: 0.3s;
    }

    .delay-4 {
      transition-delay: 0.4s;
    }

    .delay-5 {
      transition-delay: 0.5s;
    }

    /* Navigation */
    .nav-blur {
      backdrop-filter: blur(20px);
      background: rgba(10, 15, 28, 0.8);
      border-bottom: 1px solid var(--border);
    }

    .nav-link {
      position: relative;
      color: var(--fg-muted);
      transition: color 0.3s ease;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--gradient-1), var(--gradient-2));
      transition: width 0.3s ease;
    }

    .nav-link:hover {
      color: var(--fg-primary);
    }

    .nav-link:hover::after {
      width: 100%;
    }

    /* Hero Section */
    .hero-title {
      font-size: clamp(2.5rem, 8vw, 5rem);
      font-weight: 700;
      line-height: 1.1;
      letter-spacing: -0.02em;
    }

    .gradient-text {
      background: linear-gradient(135deg, var(--gradient-1) 0%, var(--gradient-2) 50%, var(--gradient-3) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 16px;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 100px;
      font-size: 0.875rem;
      color: var(--fg-muted);
    }

    .badge-dot {
      width: 8px;
      height: 8px;
      background: #22c55e;
      border-radius: 50%;
      animation: pulse 2s ease-in-out infinite;
    }

    @keyframes pulse {

      0%,
      100% {
        opacity: 1;
        transform: scale(1);
      }

      50% {
        opacity: 0.5;
        transform: scale(1.2);
      }
    }

    /* Buttons */
    .btn-primary {
      position: relative;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 16px 32px;
      background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
      color: white;
      font-family: 'Space Grotesk', sans-serif;
      font-weight: 600;
      border-radius: 12px;
      border: none;
      cursor: pointer;
      overflow: hidden;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .btn-primary::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, var(--gradient-2), var(--gradient-1));
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 20px 40px -10px var(--accent-glow);
    }

    .btn-primary:hover::before {
      opacity: 1;
    }

    .btn-primary span {
      position: relative;
      z-index: 1;
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 16px 32px;
      background: transparent;
      color: var(--fg-primary);
      font-family: 'Space Grotesk', sans-serif;
      font-weight: 600;
      border-radius: 12px;
      border: 1px solid var(--border);
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.05);
      border-color: var(--accent);
    }

    /* Cards */
    .course-card {
      position: relative;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 20px;
      overflow: hidden;
      transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .course-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, transparent 50%);
      opacity: 0;
      transition: opacity 0.4s ease;
    }

    .course-card:hover {
      transform: translateY(-8px);
      border-color: rgba(255, 107, 53, 0.3);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }

    .course-card:hover::before {
      opacity: 1;
    }

    .course-thumb {
      position: relative;
      height: 200px;
      overflow: hidden;
      background: var(--bg-secondary);
      /* fallback */
    }

    .course-thumb iframe,
    .course-thumb video,
    .course-thumb img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      border: none;
    }

    /* For video elements, we want it to cover but also maintain aspect ratio */
    .course-thumb video {
      object-fit: cover;
    }

    .course-thumb-bg {
      position: absolute;
      inset: 0;
      transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .course-card:hover .course-thumb-bg {
      transform: scale(1.05);
    }

    .course-level {
      position: absolute;
      top: 16px;
      left: 16px;
      padding: 6px 12px;
      background: rgba(10, 15, 28, 0.8);
      backdrop-filter: blur(10px);
      border-radius: 8px;
      font-size: 0.75rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      z-index: 5;
    }

    /* Stats */
    .stat-item {
      text-align: center;
      padding: 24px;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 16px;
      transition: all 0.3s ease;
    }

    .stat-item:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
    }

    .stat-number {
      font-size: 2.5rem;
      font-weight: 700;
      background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    /* Skills */
    .skill-tag {
      display: inline-flex;
      padding: 8px 16px;
      background: rgba(255, 107, 53, 0.1);
      border: 1px solid rgba(255, 107, 53, 0.2);
      border-radius: 8px;
      font-size: 0.875rem;
      color: var(--accent);
      transition: all 0.3s ease;
    }

    .skill-tag:hover {
      background: rgba(255, 107, 53, 0.2);
      transform: translateY(-2px);
    }

    /* Testimonials */
    .testimonial-card {
      position: relative;
      padding: 32px;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 20px;
      transition: all 0.4s ease;
    }

    .testimonial-card::before {
      content: '"';
      position: absolute;
      top: 20px;
      right: 24px;
      font-size: 4rem;
      font-family: Georgia, serif;
      color: var(--accent);
      opacity: 0.2;
      line-height: 1;
    }

    .testimonial-card:hover {
      border-color: rgba(255, 107, 53, 0.3);
      transform: translateY(-4px);
    }

    /* Section Divider */
    .section-divider {
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--border), transparent);
    }

    /* Footer */
    .footer-link {
      color: var(--fg-muted);
      transition: color 0.3s ease;
    }

    .footer-link:hover {
      color: var(--accent);
    }

    /* Floating particles */
    .particle {
      position: fixed;
      width: 4px;
      height: 4px;
      background: var(--accent);
      border-radius: 50%;
      pointer-events: none;
      z-index: 1;
      opacity: 0.3;
    }

    /* Focus states */
    *:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }

    /* Custom scrollbar */
    ::-webkit-scrollbar {
      width: 8px;
    }

    ::-webkit-scrollbar-track {
      background: var(--bg-primary);
    }

    ::-webkit-scrollbar-thumb {
      background: var(--border);
      border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
      background: var(--fg-muted);
    }

    /* Mobile nav */
    .mobile-menu {
      position: fixed;
      inset: 0;
      background: rgba(10, 15, 28, 0.95);
      backdrop-filter: blur(20px);
      z-index: 100;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 32px;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
    }

    .mobile-menu.active {
      opacity: 1;
      pointer-events: auto;
    }

    .mobile-menu a {
      font-size: 1.5rem;
      font-weight: 600;
      color: var(--fg-primary);
      font-family: 'Space Grotesk', sans-serif;
    }

    /* Add this to style.css - minimal fix */
    .course-card a[href="react.html"] {
      position: relative !important;
      z-index: 9999 !important;
      pointer-events: auto !important;
      cursor: pointer !important;
    }

    /* Add this to your style section */
    .lg\:col-span-1 {
      align-self: start;
      height: fit-content;
      position: relative;
    }

    .sticky {
      position: -webkit-sticky;
      position: sticky;
      top: 6rem;
    }